.show{
 margin-left: 20%;
  margin-top: 30px;
  height: 50px;
  width: 300px;
  text-align: center;
  font-size: 25px;
}
.add{
  font-size: 20px;
margin-left: 39%;
  margin-top: 40px;
  height: 50px;
  width: 70px;
}
.sub{
  font-size: 20px;
margin-left: 10%;
    height: 50px;
  width: 70px;
}

.counter{
  position: relative;
  top: 200px;
  right: 35%;
  float: right;
  width: 400px;
 

}
@keyframes App-logo-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
